:root {
  --primary-color: #0066cc;
  --secondary-color: #4CAF50;
  --text-color: #333;
  --text-light: #666;
  --text-lighter: #999;
  --border-color: #eee;
  --bg-color: #f5f5f5;
  --header-height: 60px;
}

* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

body {
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen,
    Ubuntu, Cantarell, 'Open Sans', 'Helvetica Neue', sans-serif;
  background-color: var(--bg-color);
  color: var(--text-color);
  line-height: 1.6;
}

a {
  color: var(--primary-color);
  text-decoration: none;
}

button {
  cursor: pointer;
  padding: 8px 16px;
  background: var(--primary-color);
  color: white;
  border: none;
  border-radius: 4px;
}

input {
  padding: 8px;
  border: 1px solid #ddd;
  border-radius: 4px;
}

.container {
  width: 100%;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 20px;
}

/* 添加一些通用的动画效果 */
@keyframes fadeIn {
  from { opacity: 0; }
  to { opacity: 1; }
}

.fade-in {
  animation: fadeIn 0.3s ease-in-out;
}